package com.jiankang.util;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class Md5 {
	public static String md5s(String plainText){
		          try {
		             MessageDigest md = MessageDigest.getInstance("MD5");
		             md.update(plainText.getBytes());
		            byte[] b = md.digest();
		             int i;
		            StringBuffer buf = new StringBuffer("");
		             for(int offset=0;offset<b.length;offset++){
	                 i = b[offset];
		                 if(i<0)
		                     i+=256;
		                 if(i<16)
		                     buf.append("0");
		                buf.append(Integer.toHexString(i));
		            }
		             return buf.toString();
		         } catch (NoSuchAlgorithmException e) {
		            e.printStackTrace();
		             return null;
		        }
		     }

}
